Write the expression with only positive exponents. Assume all variables represent nonzero numbers. Simplify if necessary.5-3
A. 
B. 125
C. -125
D. 
Answer: D
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Find the volume of the described solid.The base of the solid is the disk x2 + y2 ? 36. The cross sections by planes perpendicular to the 
between 
and 
are isosceles right triangles with one leg in the disk.
A. 720 B. 144 C. 576 D. 1152
Solve the problem.The length of a rectangle is 4 meters, and the width is 3 meters. Find the measure of the diagonal of the rectangle.4 meters
A. 10 meters B. 5 meters C. 4 meters D. 6 meters
Find the derivative of y.y = ln(sech (8x + 5))
A. 
B. -tanh (8x + 5)
C. tanh (8x + 5)
D. -8 tanh (8x + 5)
Use the table to solve the problem.The cost, in dollars, of a cab ride for x miles is given by the function f in the following table.
What is the cost of a 4-mile cab ride?
A. $4.05 B. $4.65 C. $5.25 D. $3.45